He told Rolling Stone: "If I'm at a point where I go, 'I'm not sure about this', I'll throw it across the room to John. He'll say, 'You can't go there, man'. And I'll say, 'You're quite right. How about this?' 'Yeah, that's better'.

"We'll have a conversation. I don't want to lose that."

McCartney also explained that he has made amends with Lennon's widow Yoko Ono after a bitter relationship.

He said: "I thought, 'If John loved her, there's got to be something. He's not stupid'. It's like, what are you going to do? Are you going to hold a grudge you never really had?

"George [Harrison] would say to me, 'You don't want stuff like that hanging around in your life'."